LONDON: Online advertising expenditure rose by 17.1% in the UK last year to £3.4 billion ($4.8bn; €3.6bn), according to figures produced by the IAB, WARC and PricewaterhouseCoopers.

The medium's share of British ad revenues rose by 3.7% to 19.2% in 2008, reaching a peak of 19.8% in thee second half of last year.

Paid-for search was described as the "advertising recession-buster", posting an uplift in adspend of 22.7% to £2.0bn, meaning it took almost 60% of all web ad revenues overall.

Display spending also rose by 7.7% to £637.4m, contributing 19% of all online revenues.

Data sourced from Brand Republic; additional content by WARC staff